M. Boschini
A5086735808- Particle physics theoretical and experimental studies
- Quantum Chromodynamics and Particle Interactions
- Solar and Space Plasma Dynamics
- Dark Matter and Cosmic Phenomena
- High-Energy Particle Collisions Research
- Astrophysics and Cosmic Phenomena
- Ionosphere and magnetosphere dynamics
- Atmospheric Ozone and Climate
- Particle Detector Development and Performance
- Geomagnetism and Paleomagnetism Studies
- Neutrino Physics Research
- Atomic and Subatomic Physics Research
- Solar Radiation and Photovoltaics
- Distributed and Parallel Computing Systems
- Nuclear physics research studies
- Astro and Planetary Science
- Earthquake Detection and Analysis
- Domain Adaptation and Few-Shot Learning
- Radiation Therapy and Dosimetry
- Multimodal Machine Learning Applications
- Particle Accelerators and Free-Electron Lasers
- Radiation Detection and Scintillator Technologies
- Astronomical Observations and Instrumentation
- Gamma-ray bursts and supernovae
- Nuclear Physics and Applications
Istituto Nazionale di Fisica Nucleare, Sezione di Milano Bicocca
2016-2025
Istituto Nazionale di Fisica Nucleare, Laboratori Acceleratori e Superconduttività Applicata
2012-2024
University of Milano-Bicocca
1995-2023
Istituto Nazionale di Fisica Nucleare
2007-2023
Cineca
2013-2017
Istituto Nazionale di Fisica Nucleare, Sezione di Milano
2000-2011
University of Colorado Boulder
2002-2009
University of Milan
2000-2008
Center for Research and Advanced Studies of the National Polytechnic Institute
2003-2008
University of California, Davis
2007
A precision measurement by the Alpha Magnetic Spectrometer on International Space Station of positron fraction in primary cosmic rays energy range from 0.5 to 350 GeV based $6.8\ifmmode\times\else\texttimes\fi{}{10}^{6}$ and electron events is presented. The very accurate data show that steadily increasing 10 $\ensuremath{\sim}250\text{ }\text{ }\mathrm{GeV}$, but, 20 250 GeV, slope decreases an order magnitude. spectrum shows no fine structure, ratio observable anisotropy. Together, these...
Measurements of the positron fraction in high energy cosmic rays using space-borne Alpha Magnetic Spectrometer have been extended to energies 500 GeV. The new results show that stops increasing with at around 200
Knowledge of the precise rigidity dependence helium flux is important in understanding origin, acceleration, and propagation cosmic rays. A measurement primary rays with (momentum/charge) from 1.9 GV to 3 TV based on 50 million events presented compared proton flux. The detailed variation spectral index for first time. progressively hardens at rigidities larger than 100 GV. similar that though magnitudes are different. Remarkably, ratio increases up 45 then becomes constant; above well...
The Alpha Magnetic Spectrometer (AMS) is a precision particle physics detector on the International Space Station (ISS) conducting unique, long-duration mission of fundamental research in space. objectives include precise studies origin dark matter, antimatter, and cosmic rays as well exploration new phenomena. Following 16-year period construction testing, precursor flight Shuttle, AMS was installed ISS May 19, 2011. In this report we present results based 120 billion charged ray events up...
A measurement of the cosmic ray positron fraction e+/(e++e−) in energy range 1–30 GeV is presented. The based on data taken by AMS-01 experiment during its 10 day Space Shuttle flight June 1998. proton background suppression order 106 reached identifying converted bremsstrahlung photons emitted from positrons.
We report the observation of new properties primary cosmic rays He, C, and O measured in rigidity (momentum/charge) range 2 GV to 3 TV with 90×10^{6} helium, 8.4×10^{6} carbon, 7.0×10^{6} oxygen nuclei collected by Alpha Magnetic Spectrometer (AMS) during first five years operation. Above 60 GV, these three spectra have identical dependence. They all deviate from a single power law above 200 harden an way.
We present a measurement of the cosmic ray (e^{+}+e^{-}) flux in range 0.5 GeV to 1 TeV based on analysis 10.6 million events collected by AMS. The statistics and resolution AMS provide precision flux. is smooth reveals new distinct information. Above 30.2 GeV, can be described single power law with spectral index γ=-3.170±0.008(stat+syst)±0.008(energy scale).
Precision measurements of cosmic ray positrons are presented up to 1 TeV based on 1.9 million collected by the Alpha Magnetic Spectrometer International Space Station. The positron flux exhibits complex energy dependence. Its distinctive properties (a) a significant excess starting from 25.2±1.8 GeV compared lower-energy, power-law trend, (b) sharp dropoff above 284+91−64 GeV, (c) in entire range is well described sum term associated with produced collision rays, which dominates at low...
Continual Learning has inspired a plethora of approaches and evaluation settings; however, the majority them overlooks properties practical scenario, where data stream cannot be shaped as sequence tasks offline training is not viable. We work towards General (GCL), task boundaries blur domain class distributions shift either gradually or suddenly. address it through mixing rehearsal with knowledge distillation regularization; our simple baseline, Dark Experience Replay, matches network's...
Precision results on cosmic-ray electrons are presented in the energy range from 0.5 GeV to 1.4 TeV based $28.1\ifmmode\times\else\texttimes\fi{}{10}^{6}$ collected by Alpha Magnetic Spectrometer International Space Station. In entire electron and positron spectra have distinctly different magnitudes dependences. The flux exhibits a significant excess starting $42.{1}_{\ensuremath{-}5.2}^{+5.4}\text{ }\text{ }\mathrm{GeV}$ compared lower trends, but nature of this is above...
We present results over an 11-year Solar cycle of cosmic antiprotons based on <a:math xmlns:a="http://www.w3.org/1998/Math/MathML" display="inline"><a:mn>1.1</a:mn><a:mo>×</a:mo><a:msup><a:mn>10</a:mn><a:mn>6</a:mn></a:msup></a:math> events in the rigidity range from 1.00 to 41.9 GV. The <c:math xmlns:c="http://www.w3.org/1998/Math/MathML" display="inline"><c:mover accent="true"><c:mi>p</c:mi><c:mo stretchy="false">¯</c:mo></c:mover></c:math> fluxes exhibit distinct properties. magnitude...
Local interstellar spectra (LIS) for protons, helium, and antiprotons are built using the most recent experimental results combined with state-of-the-art models propagation in Galaxy heliosphere. Two packages, GALPROP HelMod, to provide a single framework that is run reproduce direct measurements of cosmic-ray (CR) species at different modulation levels both polarities solar magnetic field. To do so self-consistent way, an iterative procedure was developed, where LIS output fed into...
We present the precision measurement from May 2011 to 2017 (79 Bartels rotations) of proton fluxes at rigidities 1 60 GV and helium 1.9 based on a total 1×10^{9} events collected with Alpha Magnetic Spectrometer aboard International Space Station. This is in solar cycle 24, which has maximum April 2014. observed that, below 40 GV, flux show nearly identical fine structures both time relative amplitude. The amplitudes decrease increasing rigidity vanish above GV. are reduced during period,...
Composition and spectra of Galactic cosmic rays (CRs) are vital for studies high-energy processes in a variety environments on different scales, interpretation γ-ray microwave observations, disentangling possible signatures new phenomena, understanding our local neighborhood. Since its launch, AMS-02 has delivered outstanding-quality measurements the p¯ , e±, nuclei: 1H-8O, 10Ne, 12Mg, 14Si. These resulted number breakthroughs; however, heavier nuclei especially low-abundance not expected...
We report the observation of new properties primary iron (Fe) cosmic rays in rigidity range 2.65 GV to 3.0 TV with 0.62×106 nuclei collected by Alpha Magnetic Spectrometer experiment on International Space Station. Above 80.5 dependence ray Fe flux is identical He, C, and O fluxes, Fe/O ratio being constant at 0.155±0.006. This shows that unexpectedly belong same class which different from Ne, Mg, Si class.Received 2 October 2020Revised 22 November 2020Accepted 9 December...
We present high-statistics, precision measurements of the detailed time and energy dependence primary cosmic-ray electron flux positron over 79 Bartels rotations from May 2011 to 2017 in range 1 50 GeV. For first time, charge-sign dependent modulation during solar maximum has been investigated detail by leptons alone. Based on 23.5×10^{6} events, we report observation short-term structures timescale months coincident both flux. These are not visible e^{+}/e^{-} ratio. The across polarity...
We report the observation of new properties primary cosmic rays, neon (Ne), magnesium (Mg), and silicon (Si), measured in rigidity range 2.15 GV to 3.0 TV with 1.8×10^{6} Ne, 2.2×10^{6} Mg, 1.6×10^{6} Si nuclei collected by Alpha Magnetic Spectrometer experiment on International Space Station. The Ne Mg spectra have identical dependence above 3.65 GV. three 86.5 GV, deviate from a single power law 200 harden an way. Unexpectedly, rays is different He, C, O. This shows that O are two classes rays.
Using data from the FOCUS experiment we analyze $D^+π^-$ and $D^0π^+$ invariant mass distributions. We measure $D_2^{*0}$ $M_{D_2^{*0}} = (2464.5 \pm 1.1 1.9) \mev$ width $Γ_{D_2^{*0}} (38.7 5.3 2.9) \mev$, $D_2^{*+}$ $ M_{D_2^{*+}} (2467.6 1.5 0.76) Γ_{D_2^{*+}} (34.1 6.5 4.2) \mev$. find evidence for broad structures over background in both neutral charged final state. If each is interpreted as a single L=1, $j_q=1/2$ excited charm meson resonance, masses widths are $M_{1/2}^0 =(2407 21...